US1026767A

US1026767A - Printing appliance.

Info

Publication number: US1026767A
Application number: US58471210A
Authority: US
Inventors: John P Quiggan
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-09-30
Filing date: 1910-09-30
Publication date: 1912-05-21
Anticipated expiration: 1929-05-21

Description

J. P. QUIGGAN. PRINTING APPLIANCB.

ArPLIoATIoN rILED SEPT. ao, 1910.

2 SHEETSSHEET -1.

Patented May 21, 1912.

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J. P. QUIGGAN. PRINTING APPLIANGE.

APPLIOATION FILED SEPT. so, 1910.

1,026,767. Patented May 21, 1912.

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JOHN 1?. QUIGGAN, 0F BROOKLYN, NEW YORK.

PRINTING APPLIANCE.

Specication of Letters Patent.

Patented May 21, 1912.

Application led September 30, 1910. Serial No. 584,712.

To all 'whom it may concern:4

Be it` known that I, JOHN RYQUIGGAN, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Printing Appliances, 'of which the following is a specification.

This invention relates to improvements in printing appliances and more particularly to clamps for printing plates.

One object of the invention is to provide a base block provided with a plurality of vertically' arranged and equally spaced tapering openings therethrough.

The invention resides particularly in the peculiar construction of the clamps which are adapted to be inserted in the above mentioned openings in the base block.

Another object of the invention is to so construct the clamps, that they will lirmly hold themselves in the openings in the base block.

A further object is to improve the construction o the clampsthat they may be readily inserted into and removed from the base block.

Other objects and advantages will appear as the description proceeds.

In the accompanying drawings in whic is illustrated the device of the above described character, Figure 1 is a top plan view of a perforated base block, and a series of my clamps holding aprinting plate in position, Fig. 2 is a section on the line 2-2 of Fig. 1, Fig. 3 is a vertical sectional view through one form of the clamp, Fig. 4 is a perspective view of the body of the clamp shown in Fig.l 3, 5 is a vertical sectional view of a modiiication of the clamp,

Fig. 6 is a perspective view of the movablek jaw of the clamp of Fig. 5, Fig. 7 is a perspective view of the spring used with the clamp shown in Fig. 5,y for' retaining the clamp in the base block, Fig. 8 is a perspective view of thebody of the clamp shown in Fig. 5, Fig.v 9l is a side view of a tool for rotating the pinions of the clamps.

Referring to the drawings, 1 represents the bed of a press, in which is secured a base block 2 having formed vertically therethrough, and at equally spaced intervals the circular tapering openings 3, in which openings are adapted to be inserted the clamps forming the subject matter of this application.

Referring particularly to Figs. 3 and 4 the clamp comprises a body portion 4 having a base 5 projecting laterally from the lower portion thereof. The body 4 is semi-tubular and has a transverse slot 17, which lets into a transverse tubular passage 18. In the above mentioned slot and passage is secured a friction spring 19 and a clamping aw 20, formed of a single piece of spring metal. The clamping jaw comprises a vertical member 21 having a T-head on its upper end 22, and directly beneath the head is an enlarged portion 23 formed with a transversely arranged opening 24, to receive the threaded end therethrough of the bolt 25, which has its opposite end secured within the vertical extension 26 of the body 4. Threadedly mounted on the bolt 25, and between the enlargement 23 and the extension 26, is a pinion 27, which is adapted to bear against said enlargement to force the same forward, and engage the portion 22 against the printing plate 16 or release the same therefrom. The lower ends, at the rear portion of the body of the clamp, are slightly tapered as at 28. The pinion 27 is adapted to be rotated in either direction by means of the device shown in Fig. 9, which comprises a handle portion 29, from the lower edge of which, and forming a part thereof, is a rack member 30. This rack member has a straight portion 31 and the end curved portions 32, which facilitates the easy application and removal of the device from the pinions on the clamps.' The central portion of the rack 30 is formed with two vertical slots 33, through which pass the adjusting screws 34, threaded into a guide plate 35. This guide plate projects a distance, which is adjusted by means of the screw and slot connection, below the rack teeth, and engages against the side faces of the pinions, to hold the rack in positive engagement with the pinions.

In Fig. 5, I have shown a slightly difterent form of the jaw. The upper portion of the jaw is similar to that inthe other form, but at the lower end ofr the vertical portion, is integrally formed therewith, a rearwardly extending cylindrical block 36, and at the rear end of said extension and projecting above the upper face thereof, is a small lug 37, having its front face 38 adapted to bear against the rear face of the pinion 27. This clamp has a solid body portion 4 and a bot* tom extension 5', in the upper face of the latter of which is a transverse slot 17 in which is rigidly secured a spring 19, identical in purpose to the spring 19 of the form shown in Fig. 3. The spring, however, is forked at its free end to provide the ngers 39, while the spring in the clamp shown in Fig. 3 is solid, and widens toward the top. In the upper portion of the body a is an opening 30, which is circular in its lower port-ion to accommodate the cylindrical portion 36 of the jaw, and the vertical angular portion al for the lug 37. This serves to guide the jaw, and to prevent its turning. In the operation of the device, the printing plate is positioned on the base block, and the form of clamp shown in Fig. 3 slipped into the openings adjacent one of the ends and adjacent side of the plate until the beveled portion of the cross arm of the jaw engages with the edge of the plate. The tool having the rack 30 thereon, is engaged with the pinions on the clamps and move longi tudinally across said pinions to cause them to rotate. The rot-ation of the pinions will cause them to advance along the threads of the bolts and push the jaw tightly into engagement with the printing plate. The curved portion of the rack is used when the clamps are placed so that it would be impossible to get a full sweep of the straight portion of the rack, it being only necessary to tip up the forward end of the tool and allow the curved port-ion to engage the pinion of the clamps at one end of a row. The rack is made long enough to engage a number of the pinions at the same time, to facilitate the quick adjustment of the clamps. A plurality of these clamps are placed in the tapering openings 3 of the base block around a printing plate 16, so that the jaw 8 will engage the edges of said plate, and the cross-head being beveled at 9, and extending slightly over the edge of the plate, will, under the force of the spring 13, hold the said plate against vertical movement ,from or lateral movement on the base block.

The taper of the openings 3 is very slight, the approximate difference between the upper and lower diameters being .04 of an inch.

It will thus be seen that a printing plate of any size within that of the chase, or of any shape, may be used, and it is only necessary to insert the spring and screw clamps in the openings adjacent the respective end and side edges of the printing plate. The clamps are securely held within the openings of the base block, and effectively prevent any movement of the printing plate. The clamps will, when engaged against the edges of the printing plate, cant slightly, and may be easily and quickly removed by simply tilting them into their upright positions, it of course being understood, that the jaws are first released from the printing plate.

It will be apparent that changes Vin the form, proportions, and minor det-ails of construction, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

lVhat is claimed is:

1. In a printing appliance, the combination with a base block having a plurality of tapering openings therein and a printing plate positioned thereon, of clamps adapted to be inserted in the openings of the base block, said clamps comprising a vertical body portion, a lateral extension on said body portion, a movable jaw mounted on said body portion, a horizontally disposed threaded bolt in the upper portion of the body of the clamp, said jaw having a lateral opening therein toreceive said boltV therethrough, a spring secured in the said lateral extension to retain the clamp within an opening on the said base block, and a pinion threaded on the said bolt, said pinion, when rotated, advancing and receding said jaw with respect to the printing plate.

2. In a printing appliance, the combination with a base block having a series of tapering openings therein and a printing plate positioned thereon, of clamps adapted to be inserted in one of the openings in said base block surrounding said plate, each of said clamps comprising a vertical body portion having a transverse opening through its upper part, a lateral extensionV formed integrally with the lower part of said body portion, a spring secured within a groove in said extension, a jaw having a tubular portion adapted to move through the said opening in the upper part of the body portion, a guiding lug on said cylindrical portion for engagement within an offset recess in the upper part of the body portion, a T-shaped member formed on the forward end of said cylindrical portion, t-he forward face of the cross of said T-member being beveled and adapted for engagement with the edge of said printing plate, the vertical part of said T member having an opening therethrough, a threaded bolt secured at one end to the upper part of the body portion and extending through the opening in said T member, and a pinion threaded on said bolt between the said T member and the said lug.

3. In a printing appliance, the combination with a base block having a series of tapering openings therein, and a printing plate positioned thereon, of clamps in the openings in said base block, surrounding said plate, each of said clamps comprising a vertical body portion, the horizontal eX- tension of the lower portion thereof, a bowed spring secured to said extensiomand projecting upwardly, said spring engaging in the openings in the base block, and resilient means on the upper end of the body portion for engagement with the printing 5 plate.

10 openings in said base block surrounding said plate, each of said clamps comprising a vertical body portion, the horizontal extension of the lower portion thereof, a bowed spring secured to said extension, and projecting upwardly, said spring engaging in the openings in the base block, and resilient adjusted means on the upper end of the body portion for engagement with the printing plate.

In testimony whereof I aiiX my signature, in the presence of two witnesses.

JOHN P. QUIGGAN. Witnesses:

WALTER BRooKEs, JOHN KoBRENs.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.